An early example of SPC was described in Industrial Quality Control [The Introduction of Quality Control at
Question:
(a) Set up a P chart for this process. Is this process in statistical control?
(b) Suppose that instead of n = 1500, n = 100. Use the data given to set up a P chart for this process. Revise the control limits if necessary.
(c) Compare your control limits for the P charts in parts (a) and (b). Explain why they differ. Also, explain why your assessment about statistical control differs for the two sizes of n.
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a This process is out of control b The process is still out of control but not as many points fall ...View the full answer
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Related Book For 
Applied Statistics And Probability For Engineers
ISBN: 9781118539712
6th Edition
Authors: Douglas C. Montgomery, George C. Runger
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